import type {
  Participant,
  TrackType,
  VideoDimension,
} from './gen/video/sfu/models/models';
import type {
  AudioSettingsRequestDefaultDeviceEnum,
  CallRecordingStartedEventRecordingTypeEnum,
  JoinCallRequest,
  MemberResponse,
  OwnCapability,
  ReactionResponse,
  StartRecordingRequest,
  StartRecordingResponse,
} from './gen/coordinator';
import type { StreamClient } from './coordinator/connection/client';
import type {
  RejectReason,
  StreamClientOptions,
  TokenProvider,
  User,
} from './coordinator/connection/types';
import type { Comparator } from './sorting';
import type { StreamVideoWriteableStateStore } from './store';
import { AxiosError } from 'axios';
import type { Call } from './Call';

export type StreamReaction = Pick<
  ReactionResponse,
  'type' | 'emoji_code' | 'custom'
>;

export enum VisibilityState {
  UNKNOWN = 'UNKNOWN',
  VISIBLE = 'VISIBLE',
  INVISIBLE = 'INVISIBLE',
}

export enum DebounceType {
  IMMEDIATE = 20,
  FAST = 100,
  MEDIUM = 600,
  SLOW = 1200,
}

export interface StreamVideoParticipant extends Participant {
  /**
   * The participant's audio stream, if they are publishing audio and
   * we have subscribed to it.
   */
  audioStream?: MediaStream;

  /**
   * The participant's video stream, if they are sharing their video,
   * and we are subscribed to it.
   */
  videoStream?: MediaStream;

  /**
   * The participant's screen share stream, if they are sharing their screen,
   * and we are subscribed to it.
   */
  screenShareStream?: MediaStream;

  /**
   * The participant's screen audio stream, if they are sharing their audio,
   * and we are subscribed to it.
   */
  screenShareAudioStream?: MediaStream;

  /**
   * The preferred video dimensions for this participant.
   * Set it to `undefined` to unsubscribe from this participant's video.
   */
  videoDimension?: VideoDimension;

  /**
   * The preferred screen share dimensions for this participant.
   * Set it to `undefined` to unsubscribe from this participant's screen share.
   */
  screenShareDimension?: VideoDimension;

  /**
   * A list of tracks that are currently paused by our servers.
   * Typically, a server-side pause happens when the local participant doesn't
   * have enough bandwidth to receive all tracks. In this case, the server
   * will pause some tracks to optimize the bandwidth usage.
   * Once the bandwidth is restored, the server will resume the paused tracks.
   * This is useful to avoid any unwanted video and audio artifacts.
   */
  pausedTracks?: TrackType[];

  /**
   * True if the participant is the local participant.
   */
  isLocalParticipant?: boolean;

  /**
   * The pin state of the participant.
   */
  pin?: ParticipantPin;

  /**
   * The last reaction this user has sent to this call.
   * Integrators can batch/collect past reactions and show them to the UI.
   */
  reaction?: StreamReaction;

  /**
   * The visibility state of the participant's tracks within a defined viewport.
   */
  viewportVisibilityState?: Record<VideoTrackType, VisibilityState>;

  /**
   * The volume of the participant's audio stream (from 0 to 1).
   * Set it to `undefined` to use the default volume.
   *
   * Note: this value is not applicable in React Native.
   */
  audioVolume?: number;
}

export type VideoTrackType = 'videoTrack' | 'screenShareTrack';
export type AudioTrackType = 'audioTrack' | 'screenShareAudioTrack';
export type TrackMuteType =
  | 'audio'
  | 'video'
  | 'screenshare'
  | 'screenshare_audio';

/**
 * Represents a participant's pin state.
 */
export type ParticipantPin = {
  /**
   * Set to true if the participant is pinned by the local user.
   * False if the participant is pinned server-side, by the call moderator.
   */
  isLocalPin: boolean;

  /**
   * Timestamp when the participant is pinned.
   */
  pinnedAt: number;
};

export type ClosedCaptionsSettings = {
  /**
   * The time in milliseconds to keep a closed caption in the state (visible).
   * Default is 2700 ms.
   */
  visibilityDurationMs?: number;
  /**
   * The maximum number of closed captions to keep in the state (visible).
   * When the maximum number is reached, the oldest closed caption is removed.
   *
   * Default is 2.
   */
  maxVisibleCaptions?: number;
};

/**
 * A partial representation of the StreamVideoParticipant.
 */
export type StreamVideoParticipantPatch = Partial<StreamVideoParticipant>;

/**
 * A collection of {@link StreamVideoParticipantPatch} organized by sessionId.
 */
export type StreamVideoParticipantPatches = {
  [sessionId: string]: StreamVideoParticipantPatch;
};

export type SubscriptionChange = {
  /**
   * The video dimension to request.
   * Set it to `undefined` in case you want to unsubscribe.
   */
  dimension: VideoDimension | undefined;
};

export type SubscriptionChanges = {
  [sessionId: string]: SubscriptionChange;
};

/**
 * A preferred codec to use when publishing a video or audio track.
 * @internal
 */
export type PreferredCodec = 'vp8' | 'h264' | 'vp9' | 'av1';

/**
 * A collection of track publication options.
 * @internal
 */
export type ClientPublishOptions = {
  /**
   * The preferred codec to use when publishing the video stream.
   */
  preferredCodec?: PreferredCodec;
  /**
   * The fmtp line for the video codec.
   */
  fmtpLine?: string;
  /**
   * The preferred bitrate to use when publishing the video stream.
   */
  preferredBitrate?: number;
  /**
   * The maximum number of simulcast layers to use when publishing the video stream.
   */
  maxSimulcastLayers?: number;
  /**
   * The preferred subscription (incoming video stream) codec.
   */
  subscriberCodec?: PreferredCodec;
  /**
   * The fmtp line for the subscriber codec.
   */
  subscriberFmtpLine?: string;
  /**
   * Screen share settings.
   */
  screenShareSettings?: ScreenShareSettings;
  /**
   * Forces a specific codec to be used when publishing and subscribing a video stream.
   * Never use it in production as it can have unforeseeable consequences.
   * @internal
   */
  dangerouslyForceCodec?: PreferredCodec;
  /**
   * Sets the start bitrate factor to use when publishing a vp9 or av1 or h264 video stream.
   * Must be between 0 and 1.
   * By default the start bitrate is set to 300kbps.
   * This value is used to calculate the start bitrate based on the max bitrate.
   * For example, if the max bitrate is 1500kbps and the start bitrate factor is 0.5, the start bitrate will be 750kbps.
   */
  dangerouslySetStartBitrateFactor?: number;
};

export type ScreenShareSettings = {
  /**
   * Limits the maximum framerate (in frames per second) of the screen share.
   * Defaults to 30.
   */
  maxFramerate?: number;

  /**
   * Limits the maximum bitrate (in bits per second) of the screen share.
   * Defaults to 3000000 (3Mbps).
   */
  maxBitrate?: number;

  /**
   * The content hint to use when publishing the screen share.
   * This can be used to optimize the video quality for different types of content.
   *
   * Defaults to '' (no hint, browser's default behavior).
   * Use 'motion' for video content, 'detail' for presentations or documents, and 'text' for text-heavy content.
   *
   * Please read the documentation for more information on content hints:
   * - https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/contentHint
   */
  contentHint?: '' | 'motion' | 'detail' | 'text';
};

export type CallLeaveOptions = {
  /**
   * If true, the caller will get a `call.rejected` event.
   * Has an effect only if the call is in the `ringing` state.
   */
  reject?: boolean;

  /**
   * The reason for leaving the call.
   * This will be sent as the `reason` field in the `call.rejected` event.
   */
  reason?: RejectReason;

  /**
   * You can provide extra information about why the call is being left and/or rejected, used for logging purposes.
   */
  message?: string;
};

/**
 * The options to pass to {@link Call} constructor.
 */
export type CallConstructor = {
  /**
   * The streamClient instance to use.
   */
  streamClient: StreamClient;

  /**
   * The Call type.
   */
  type: string;

  /**
   * The Call ID.
   */
  id: string;

  /**
   * An optional list of {@link MemberResponse} from the backend.
   * If provided, the call will be initialized with the data from this object.
   * This is useful when initializing a new "pending call" from an event.
   */
  members?: MemberResponse[];

  /**
   * An optional list of {@link OwnCapability} coming from the backed.
   * If provided, the call will be initialized with the data from this object.
   * This is useful when initializing a new "pending call" from an event.
   */
  ownCapabilities?: OwnCapability[];

  /**
   * Flags the call as a ringing call.
   * @default false
   */
  ringing?: boolean;

  /**
   * Set to true if this call instance should receive updates from the backend.
   *
   * @default false.
   */
  watching?: boolean;

  /**
   * The default comparator to use when sorting participants.
   */
  sortParticipantsBy?: Comparator<StreamVideoParticipant>;

  /**
   * The state store of the client
   */
  clientStore: StreamVideoWriteableStateStore;
};

type StreamVideoClientBaseOptions = {
  apiKey: string;
  options?: StreamClientOptions;
};

type StreamVideoClientOptionsWithoutUser = StreamVideoClientBaseOptions & {
  user?: undefined;
  token?: never;
  tokenProvider?: never;
};

type GuestUser = Extract<User, { type: 'guest' }>;
type AnonymousUser = Extract<User, { type: 'anonymous' }>;
type AuthenticatedUser = Exclude<User, GuestUser | AnonymousUser>;

type StreamVideoClientOptionsWithGuestUser = StreamVideoClientBaseOptions & {
  user: GuestUser;
  token?: never;
  tokenProvider?: never;
};

type StreamVideoClientOptionsWithAnonymousUser =
  StreamVideoClientBaseOptions & {
    user: AnonymousUser;
    token?: string;
    tokenProvider?: TokenProvider;
  };

type StreamVideoClientOptionsWithAuthenticatedUser =
  StreamVideoClientBaseOptions & {
    user: AuthenticatedUser;
  } & (
      | { token: string; tokenProvider?: TokenProvider }
      | { token?: string; tokenProvider: TokenProvider }
    );

export type StreamVideoClientOptions =
  | StreamVideoClientOptionsWithoutUser
  | StreamVideoClientOptionsWithGuestUser
  | StreamVideoClientOptionsWithAnonymousUser
  | StreamVideoClientOptionsWithAuthenticatedUser;

export type CallRecordingType = CallRecordingStartedEventRecordingTypeEnum;
export type StartCallRecordingFnType = {
  (): Promise<StartRecordingResponse>;
  (type: CallRecordingType): Promise<StartRecordingResponse>;
  (request: StartRecordingRequest): Promise<StartRecordingResponse>;
  (
    request: StartRecordingRequest,
    type: CallRecordingType,
  ): Promise<StartRecordingResponse>;
};

type StreamRNVideoSDKCallManagerRingingParams = {
  isRingingTypeCall: boolean;
};

type StreamRNVideoSDKCallManagerSetupParams =
  StreamRNVideoSDKCallManagerRingingParams & {
    defaultDevice: AudioSettingsRequestDefaultDeviceEnum;
  };

type StreamRNVideoSDKEndCallReason =
  /** Call ended by the local user (e.g., hanging up). */
  | 'local'
  /** Call ended by the remote party, or outgoing call was not answered. */
  | 'remote'
  /** Call was rejected/declined by the user. */
  | 'rejected'
  /** Remote party was busy. */
  | 'busy'
  /** Call was answered on another device. */
  | 'answeredElsewhere'
  /** No response to an incoming call. */
  | 'missed'
  /** Call failed due to an error (e.g., network issue). */
  | 'error'
  /** Call was canceled before the remote party could answer. */
  | 'canceled'
  /** Call restricted (e.g., airplane mode, dialing restrictions). */
  | 'restricted'
  /** Unknown or unspecified disconnect reason. */
  | 'unknown';

type StreamRNVideoSDKCallingX = {
  joinCall: (call: Call, activeCalls: Call[]) => Promise<void>;
  endCall: (
    call: Call,
    reason?: StreamRNVideoSDKEndCallReason,
  ) => Promise<void>;
  registerOutgoingCall: (call: Call) => Promise<void>;
};

export type StreamRNVideoSDKGlobals = {
  callingX: StreamRNVideoSDKCallingX;
  callManager: {
    /**
     * Sets up the in call manager.
     */
    setup({
      defaultDevice,
      isRingingTypeCall,
    }: StreamRNVideoSDKCallManagerSetupParams): void;

    /**
     * Starts the in call manager.
     */
    start({
      isRingingTypeCall,
    }: StreamRNVideoSDKCallManagerRingingParams): void;

    /**
     * Stops the in call manager.
     */
    stop({ isRingingTypeCall }: StreamRNVideoSDKCallManagerRingingParams): void;
  };
  permissions: {
    /**
     * Checks whether a native device permission has been granted.
     */
    check(permission: 'microphone' | 'camera'): Promise<boolean>;
  };
};

declare global {
  var streamRNVideoSDK: StreamRNVideoSDKGlobals | undefined;
}

/**
 * The options to pass to {@link Call.join} method.
 */
export type JoinCallData = Omit<JoinCallRequest, 'location'>;
export { AxiosError };